Having Diffraction Grating Means Patents (Class 356/328)
  • Patent number: 11022793
    Abstract: A fiber scanning projector includes a piezoelectric element and a scanning fiber mechanically coupled to the piezoelectric element. The fiber scanning projector also includes an optical assembly section operable to receive light from the scanning fiber. The optical assembly section includes a prism element, a collimating element coupled to the prism element at an interface, a quarter wave plate, and a polarizing beam splitter disposed at the interface.
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: June 1, 2021
    Assignee: Magic Leap, Inc.
    Inventors: Brian T. Schowengerdt, Mathew D. Watson, Charles David Melville, Samuel Scott Frank
  • Patent number: 11022494
    Abstract: Apparatus for measuring spectra from one or more samples, the apparatus including a reference waveguide that receives illuminating radiation used to illuminate at least one sample, at least one sample waveguide that receives sample radiation at least one of reflected from and transmitted through a respective sample, an optical system that spatially distributes radiation from each of the waveguides based on a frequency of the radiation, and focuses radiation from the optical fibres into an imaging plane and an imaging device that captures an image of the focused and spatially distributed radiation from the imaging plane so that the image includes respective spectra from each of the waveguides.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: June 1, 2021
    Assignee: Commonwealth Scientific and Indsutrial Research Organisation
    Inventors: Stephen Gensemer, Tim Malthus
  • Patent number: 11002607
    Abstract: An apparatus includes an optical detector configured to detect at least a portion of incoming radiation. The apparatus also includes an optical component configured to provide at least the portion of the incoming radiation to the optical detector. The apparatus further includes at least one flexure that mounts the optical component to the optical detector. Each flexure is configured to deform in response to expansion or contraction of at least one of the optical component and the optical detector. Each flexure may include a side surface that is flexible in a first dimension and rigid in second and third dimensions, where the dimensions are orthogonal to each other. The optical component may include at least one of a filter, a lens, a polarizer, an aperture, and a cover.
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: May 11, 2021
    Assignee: Raytheon Company
    Inventors: Stephen Marinsek, Thomas P. Sprafke, Richard J. Peralta
  • Patent number: 10989653
    Abstract: A color imaging system and method, the method comprising, for a plurality of predetermined wavelength bands of illumination, calculating weight coefficients representing the contribution of each of the wavelength bands to a specific color space, individually controlling illumination intervals of each of a plurality of illumination sources, wherein each of the illumination sources is configured to provide illumination via a waveguide in a different predetermined narrow band of wavelengths, controlling an image sensor to capture a set of monochromatic image frames synchronously with the illumination intervals, receiving a set of the captured monochromatic image frames, and generating color image data by calculating a combination of the set of image frames, each weighted by the corresponding coefficient.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: April 27, 2021
    Inventor: Omri Warshavski
  • Patent number: 10983002
    Abstract: The invention relates to a spectrometer comprising a housing (11) equipped with a planar optical grating (2), which is arranged opposite an aperture (1) of the housing (11) and which is aligned at an angle of less than 45° to a normal of the aperture (1), a lens assembly (6), and a sensor element (7). The aperture (1) is dimensioned such that electromagnetic radiation incident parallel to the normal of the aperture (1) completely irradiates the surface of the optical grating (2). The lens assembly (6) is arranged between the optical grating (2) and the sensor element (7) in order to focus the electromagnetic radiation onto the sensor element (7) such that solely a first order of diffraction or higher orders of diffraction of the electromagnetic radiation diffracted by the optical grating (2) is directed towards the lens assembly (6) and the sensor element (7).
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: April 20, 2021
    Assignee: ANVAJO GMBH
    Inventor: Stefan Fraedrich
  • Patent number: 10976478
    Abstract: An optical imaging system employing a device containing a sequence of first (pre-dispersor) and second (main) volume holograms configured to operate as a sequence of optical diffractive elements possessing different blazing curves. A pre-cursor hologram has a thickness smaller than the thickness of the following, disperser hologram, and a comparatively broad spectral selectivity as compared to that of the main hologram, allowing the pre-cursor to diffract light in transmission within a very large range of the angles of incidence. The use of the combination of the pre-cursor and the main holograms not only implements selective imaging of the chosen target object at every angle at which various portions of the object are seen at the optical system, but also facilitates the spectroscopic measurements of such object.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: April 13, 2021
    Assignee: Arizona Board of Regents on behalf of the University of Arizona
    Inventors: Pierre Alexandre Blanche, Eric C. Pearce
  • Patent number: 10976194
    Abstract: The present disclosure provides an imaging optical system. In one aspect, the imaging optical system includes, among other things, a light bending element configured to substantially separate electromagnetic radiation into at least two portions, and configured to redirect the at least two portions of said electromagnetic radiation into substantially different directions.
    Type: Grant
    Filed: June 6, 2020
    Date of Patent: April 13, 2021
    Assignee: Wavefront Research, Inc.
    Inventor: Thomas A. Mitchell
  • Patent number: 10924716
    Abstract: An image projection device includes: an optical component reflecting an image light beam that has been converted into a substantially parallel light by a lens and scanned by a scanner; a projection mirror irradiating a retina with the reflected image light beam; a light beam blocking unit located on a light path between the scanner and the lens and having an aperture, wherein the projection mirror has a first region and a second region having a larger light condensing power than the first region, and a light condensing power in a third region, reflecting a light beam to be emitted to the first region of the scanned image light beam, of the optical component is greater than that in a fourth region, reflecting a light beam to be emitted to the second region of the scanned image light beam, of the optical component.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: February 16, 2021
    Assignee: QD LASER, INC.
    Inventors: Makoto Suzuki, Kinya Hasegawa
  • Patent number: 10900836
    Abstract: A reflectometer has a depth sensor which obtains distance information between the depth sensor and an object, a light source which emits light having a calibrated light spectrum, a spectral sensor which collects spectral information from light reflected from the object, and a circuitry. The circuitry calculates a reflectance spectrum for the object based on the distance information and the spectral information collected from light being reflected from the object, wherein the light originates from the light source.
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: January 26, 2021
    Assignee: SONY CORPORATION
    Inventors: Alexander Gatto, Piergiorgio Sartor, Ralf Müller
  • Patent number: 10900831
    Abstract: A spectroscopic measurement apparatus includes a light emitter simultaneously emitting light including light having all wavelengths in a wavelength range from 400 nm to 700 nm to a measurement target, a light disperser dispersing a reflected light reflected by the measurement target to a predetermined wavelength, a light receiver that receives the light dispersed by the light disperser and outputs a second light reception amount indicating a light intensity of the received light, and a calculator that receives the second light reception amount of each wavelength and calculates a reflection spectrum when the measurement target is irradiated with light, in which the calculator calculates reflectance of a predetermined wavelength using the second light reception amounts of a plurality of wavelengths.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: January 26, 2021
    Inventor: Tsugio Gomi
  • Patent number: 10891455
    Abstract: A controlled image sample is obtained of a produce item. The controlled image sample may be captured using an integrated camera of a mobile device or by a specialized produce image meter from a handheld scanning device. The image sample is processed to obtain a produce signature that is unique to a type of produce associated with the image sample. The produce signature is matched to a specific produce identifier and the produce identifier is added to a list of items being purchased by a shopper through a self-shopping system.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: January 12, 2021
    Assignee: NCR Corporation
    Inventor: John Crooks
  • Patent number: 10876887
    Abstract: A spectroscopic detector includes a light source, a flow cell, a diffraction grating, a diffraction grating drive unit, an optical sensor and a diffraction grating position adjustment unit. The diffraction grating drive unit is configured to adjust a rotation position of the diffraction grating within a range that light of a specified wavelength region of plus side diffracted light and light of the specified wavelength region of minus side diffracted light among diffracted light caused by the diffraction grating is selectively guided to the flow cell. The diffraction grating position adjustment unit is configured to adjust the rotation position of the diffraction grating unit in order to selectively guide one of the light of the specified wavelength region of the plus side diffracted light and the light of the specified wavelength region of the minus side diffracted light among the diffracted light caused by the diffraction grating.
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: December 29, 2020
    Assignee: Shimadzu Corporation
    Inventor: Hiroyuki Minato
  • Patent number: 10876888
    Abstract: An optical spectrometer arrangement is provided. According to an example, the optical spectrometer arrangement comprises a linear array detector for receiving light at a predefined range of wavelengths, a point detector for receiving light at a predefined wavelength that is outside said predefined range of wavelengths, and an arrangement of a collimating optical element, a diffracting optical element, and a focusing optical element that are arranged to provide at least a first optical path that guides incoming light at said predefined range of wavelengths to the linear array detector via the collimating optical element, the diffracting optical element and the focusing optical element, and a second optical path that guides incoming light at said predefined wavelength to the point detector via the collimating optical element, the diffracting optical element and one of the collimating optical element and the focusing optical element.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: December 29, 2020
    Assignee: Hitachi High-Tech Analytical Science Limited
    Inventors: Tuomas Pylkkanen, Esa Raikkonen
  • Patent number: 10859439
    Abstract: An imaging system, and method of its use, for viewing a sample surface at an inclined angle, preferably in functional combination with a sample investigating reflectometer, spectrophotometer, ellipsometer or polarimeter system; wherein the imaging system provides that a sample surface and multi-element imaging detector surface are oriented with respect to one another to meet the Scheimpflug condition, and wherein a telecentric lens system is simultaneously positioned between the sample surface and the input surface of the multi-element imaging detector such that an image of the sample surface produced by said multi-element imaging detector is both substantially in focus over the extent thereof, and such that substantially no keystone error is demonstrated in said image.
    Type: Grant
    Filed: September 6, 2016
    Date of Patent: December 8, 2020
    Assignee: J.A. WOOLLAM CO., INC.
    Inventors: Martin M. Lihardt, Ping He, Galen L. Pfeiffer
  • Patent number: 10801956
    Abstract: The invention relates to the field of surface waves based optical devices particularly tuneable optical filter, optical biosensors and spatial light modulators. An optical sensor and tuneable filter is disclosed based on high contrast periodic structures deposited on a substrate and using a compact reading method for low detection limit using a one dimensionally diverging quasi-monochromatic beam and a camera.
    Type: Grant
    Filed: August 21, 2016
    Date of Patent: October 13, 2020
    Assignee: PHOTONICSYS LTD.
    Inventor: Ibrahim Abdulhalim
  • Patent number: 10802184
    Abstract: A diffraction grating comprises a substrate (with index nsub) with a surface facing an optical medium (with index nmed<nsub), a dielectric or semiconductor layer of thickness t on the substrate surface (with index nL?nsub), and a set of diffractive elements on the layer (with index nR?nmed). The diffractive elements comprise a set of ridges protruding into the optical medium, which fills trenches between the ridges, and are characterized by a spacing ?, a width d, and a height h. Over an operational wavelength range, ?/2nsub<?<?/(nsub+nmed). An optical signal incident on the diffractive elements from within the substrate at an incidence angle exceeding the critical angle, nsub, nmed, nL, nR, ?, d, h, and t result in wavelength-dependent, first-order diffraction efficiency of the grating greater than a prescribed level over the operational wavelength range for both s- and p-polarized optical signals.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: October 13, 2020
    Assignee: II-VI Delaware Inc.
    Inventors: Christoph M. Greiner, Thomas W. Mossberg, Dmitri Iazikov
  • Patent number: 10782186
    Abstract: A monochromator 100 includes: a diffraction grating 2 placed within a housing 1 so as to receive light from an entrance 11 and disperse the light into a spectrum from which a component of light having a set wavelength is to be extracted through an exit 12; an optical filter 92 to be removably inserted between the grating and the exit to remove light within a specific wavelength band which is out of the set wavelength; a rotary drive 5 for rotating the grating using a stepping motor; a wavelength-movement information setter 73 which sets wavelength-movement information to be used for rotating the grating from an original position to a rotational position corresponding to the set wavelength; and a wavelength-movement controller 71 which controls the rotary drive to initially rotate the grating to the original position and subsequently rotate it to the aforementioned rotational position based on the wavelength-movement information.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: September 22, 2020
    Assignee: SHIMADZU CORPORATION
    Inventor: Tomoari Kobayashi
  • Patent number: 10753796
    Abstract: An apparatus includes multiple photonic integrated circuit (PIC) optical spectrometers, and an imaging plane coupled to the PIC optical spectrometers. Each PIC optical spectrometer includes multiple semiconductor chip layers. Each semiconductor chip layer includes multiple arrayed waveguide gratings (AWGs) and a number of on-chip optical detectors.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: August 25, 2020
    Assignee: LOCKHEED MARTIN CORPORATION
    Inventors: Alan Lee Duncan, Richard Lee Kendrick
  • Patent number: 10747124
    Abstract: Methods of measuring a target formed by a lithographic process, a metrology apparatus and a polarizer assembly are disclosed. The polarizer assembly comprises a polarizing structure having a substantially planar form and configured to polarize radiation passing there through in a circular polarizing region. The circular polarizing region is configured to apply a first polarization to radiation passing through a first one of two pairs of diametrically opposite quadrants of the circular polarizing region and to apply a second polarization, orthogonal to the first polarization, to radiation passing through a second one of two pairs of diametrically opposite quadrants of the circular polarizing region.
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: August 18, 2020
    Assignee: ASML Netherlands B.V.
    Inventors: Nitesh Pandey, Zili Zhou
  • Patent number: 10739253
    Abstract: Systems, devices and methods for calibrating or increasing the accuracy of light sensing devices. The methods can include calibrating a light sensing device with a calibration source that is adapted to mimic at least one representative spectrum.
    Type: Grant
    Filed: June 7, 2017
    Date of Patent: August 11, 2020
    Assignee: YouV Labs, Inc.
    Inventors: Emmanuel Dumont, Shayak Banerjee
  • Patent number: 10731207
    Abstract: A portable testing device includes a hosing with an integrated touchscreen display and a receptacle in which a sample holder containing a biological sample and reagent mixture can be placed. The portable testing device further includes an optical assembly positioned in the housing, an electronic assembly that is configured to receive data from the optical assembly and transmit it for display upon the touchscreen display, and a power supply in the housing to power the portable testing device. The optical assembly includes an excitation filter that extends across the entire optical assembly and an emission filter that extends across the entire optical assembly.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: August 4, 2020
    Assignee: Agdia Inc.
    Inventors: Mark B. Baumgartner, Cory D. Hodgson, Andrew L. Bristow, Paul A. Syverson, Grant L. Pexsa, Christopher T. Davis, Rich Schoeneck, Duane Brown, Darren Cook
  • Patent number: 10732044
    Abstract: A non-paraxial Talbot spectrometer includes a transmission grating to receive incident light. The grating period of the transmission grating is comparable to the wavelength of interest so as to allow the Talbot spectrometer to operate outside the paraxial limit. Light transmitted through the transmission grating forms periodic Talbot images. A tilted detector is employed to simultaneously sample the Talbot images at various distances along a direction perpendicular to the grating. Spectral information of the incident light can be calculated by taking Fourier transform of the measured Talbot images or by comparing the measured Talbot images with a library of intensity patterns acquired with light sources having known wavelengths.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: August 4, 2020
    Assignee: Massachusetts Institute of Technology
    Inventors: Erika Ye, Amir H. Atabaki, Ningren Han, Rajeev J. Ram, William F. Herrington
  • Patent number: 10724899
    Abstract: Provided are a spectrometer optical system and a semiconductor inspection apparatus, for reducing cost by allowing a wide field of view, high spatial resolution, and high wavelength resolution to be compatible with one another. The spectrometer optical system includes a masking having a slit, a first spherical mirror positioned to reflect light received from the slit, a second spherical mirror positioned to reflect the light reflected from the first spherical mirror, a dispersion element positioned to receive the light reflected from the second spherical mirror, and an image sensor configured to detect the light dispersed by the dispersion element according to wavelengths of the light.
    Type: Grant
    Filed: August 15, 2019
    Date of Patent: July 28, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Yasuhiro Hidaka
  • Patent number: 10718603
    Abstract: A positioning unit mountable on a moving object includes at least one light source measuring unit and a processor. The light source measuring units have high directional sensitivity along a first axis and low directional sensitivity along a second axis orthogonal to the first axis to capture relative angular information of the moving object with respect to a plurality of stationary light sources in a space. The processor determines positioning information of the moving object at least from the output of the at least one light source measuring unit. Each light source measuring unit includes an optical arrangement and a linearly configured imaging sensor to receive light from the stationary light sources through the optical arrangement.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: July 21, 2020
    Assignee: Six Degrees Space Ltd
    Inventors: Daniel Greenspan, Klonymus Sholom Lieberman
  • Patent number: 10697833
    Abstract: The present invention relates to a method for determining a characteristic number for characterizing the quality of a shade setting of a paint in relation to a color reference, characterized in that colorimetric coordinates of the paint and of the color reference are determined with a spectrophotometer for a number of measurement geometries and wherein respective color differences are calculated and standardized from the colorimetric coordinates of the paint and of the color reference for each measurement geometry of the number of measurement geometries, and where a group of characteristic values calculated from the respective standardized color differences is assigned a scale value for determining the characteristic number by means of an assignment rule to be provided in advance.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: June 30, 2020
    Assignee: BASF Coatings GmbH
    Inventors: Carlos Vignolo, Heinrich Cloppenburg
  • Patent number: 10670853
    Abstract: To maximize the light capturing and imaging resolution capability of an imaging satellite while minimizing weight, the primary reflector and other elements of the optical path have a shape optimized to the shape of the satellite. For a nanosatellite with a square cross-section, the first mirror and other elements of the telescope section in the optical path have a square cross-section, as does the sensor array of the camera section.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: June 2, 2020
    Assignee: Hera Systems, Inc.
    Inventors: David D. Squires, Peter Mrdjen, Robert Machinski, Jolyon D. Thurgood, Brij Agrawal, Greg Defouw, Jeffrey Wedmore
  • Patent number: 10670805
    Abstract: An optical waveguide that performs both in-coupling and out-coupling using two diffractive optical elements is provided. Each optical element is a diffraction grating and can be applied to the same or different surface of the optical waveguide. The diffraction gratings overlap to form two overlapping regions. The first overlapping region in-couples light into the waveguide and the second overlapping region out-couples light from the optical waveguide. Because the optical waveguide only uses two gratings, and therefore only has two grating vectors, the optical waveguide is easier to manufacture than optical waveguides with a greater number of grating vectors.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: June 2, 2020
    Assignee: Microsoft Technology Licensing, LLC
    Inventor: Jani Kari Tapio Tervo
  • Patent number: 10674067
    Abstract: An imager for imaging a plurality of images of a single scene over a plurality of disparate electromagnetic wavelength sets includes front-end optics for outputting a polychromatic, collimated image beam of the scene; a beam displacer configured for splitting the collimated image beam into spatially displaced, mutually parallel beams, and an imaging-sensor array configured for registration of the spatially displaced wavelength sets at disparate locations along the imaging-sensor array. In alternative versions, the beam displacer displaces constituent light beams based on at least one of wavelength and polarization. In various implementations, a back-end focusing element focuses each constituent beam onto a predetermined location along the imaging-sensor array. The imaging-sensor array is optimally configured for simultaneous sampling of the plural images focused thereupon by the back-end focusing elements.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: June 2, 2020
    Assignee: Solid State Scientific Corporation
    Inventor: Jonathan Martin Mooney
  • Patent number: 10663282
    Abstract: A fiber-coupled phased-array includes a first photonic integrated circuit (PIC) and a second PIC. The first PIC includes a first set of lenslets and waveguides. The second PIC includes a second set of lenslets and waveguides and is placed at a distance from the first PIC. The optical fibers couple the first PIC to the second PIC and form an interferometric imager that can sample spatial frequencies of a target. Optical delay errors induced by a relative placement of the first PIC and the second PIC are compensated for.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: May 26, 2020
    Assignee: LOCKHEED MARTIN CORPORATION
    Inventors: Chad Elliott Ogden, Guy Chriqui, Gregory Samuel Feller
  • Patent number: 10663445
    Abstract: The present disclosure provides a method and system for identifying plant species based on hyperspectral data, wherein the method includes: performing atmospheric radiation correction for the hyperspectral data of plants to be identified adopting Linear Regression method, to obtain corrected hyperspectral data, wherein, the hyperspectral data of the plants to be identified are collected by a hyperspectral ground object spectrometer provided within an unmanned aerial vehicle (UAV); performing external parameter orthogonalisation (EPO) processing for the corrected hyperspectral data; performing first order differential processing for the EPO processed hyperspectral data, to obtain hyperspectral data highlighting absorption peak information; performing discrete wavelet transformation processing for the hyperspectral data highlighting the absorption peak information, to obtain wavelet coefficients corresponding to the plants to be identified.
    Type: Grant
    Filed: May 6, 2018
    Date of Patent: May 26, 2020
    Inventors: Guoqiang Wang, Puze Wang, Yanbo Peng, Ruimin Li, Tingxi Liu, Wei Wang, Yinglan A
  • Patent number: 10620053
    Abstract: A thermal imaging system comprises a substrate, stacked graphene arrays on the substrate, and a number of bandpass filters separating the stacked graphene arrays.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: April 14, 2020
    Assignee: The Boeing Company
    Inventor: Morteza Safai
  • Patent number: 10563834
    Abstract: The invention relates to a light guiding optical system comprising at least two light guides (6, 7, 8), to which is assigned a light unit (9) with at least one source (91) of light. The inner light guide (6) is provided with an input surface (61) with which it is situated opposite the light unit (9) and is further is provided with a broken stepped transition surface (67), which comprises at least one decoupling surface (64) and at least one reflective surface (65), whereby the broken stepped transition surface (67) of the inner light guide (6) is associated with an input surface (77, 87) of a coupling light guide (7, 8) which comprises at least one coupling surface (71, 81).
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: February 18, 2020
    Assignee: Varroc Lighting Systems, s.r.o.
    Inventors: Tomas Gloss, Ales Hendrych
  • Patent number: 10551362
    Abstract: The invention generally provides methods for improving the dynamic range of an absorbance detector and absorbance detectors having improved dynamic range. In an exemplary embodiment, the method includes receiving calibration data for a plurality of samples, the calibration data comprising an absorbance for a concentration of each of the samples, calculating a contribution of stray light to the calibration data, and correcting subsequent data by removing the contribution of stray light.
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: February 4, 2020
    Assignee: Waters Technologies Corporation
    Inventor: Richard W. Andrews
  • Patent number: 10530976
    Abstract: The present disclosure provides apparatuses and methods for color imaging and an increased field of view using spectrally encoded endoscopy techniques. At least one of the apparatuses includes an illumination unit having two or more spectrally dispersive gratings positioned, for example, on different planes or on the same plane but having grating vectors at an angle to each other such that bands of spectrally dispersed light propagating from the gratings propagate on different planes.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: January 7, 2020
    Assignee: Canon U.S.A., Inc.
    Inventors: Seiji Takeuchi, Jacob Schieffelin Brauer, Anderson Mach, Badr Elmaanaoui, Sarika Verma, Kenji Yamazoe, Toshiyuki Sudo, Michio Ishikawa
  • Patent number: 10527552
    Abstract: In an example, an apparatus is described that includes a light source, a holographic optical element, a sampling apparatus, and a detector. The light source is configured to emit a beam of excitation light. The holographic optical element is arranged to convert the beam of excitation light into a plurality of beams of excitation light. The sampling apparatus is arranged to project the plurality of beams of excitation light onto a surface outside the apparatus as a two-dimensional pattern of projection points. The sampling apparatus is further arranged to collect scattered radiation emitted by the surface in response to the two-dimensional pattern of projection points. The detector detects a frequency shift in the scattered radiation.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: January 7, 2020
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Francesco Aieta, Anita Rogacs, Viktor Shkolnikov
  • Patent number: 10520361
    Abstract: Spectral analysis system for capturing a spectrum including an inlet opening, a dispersive optical element and reflecting imaging optics having at least one optical functional element defining an optical path from the inlet opening across the dispersive optical element onto an outlet opening and/or detector area of the spectral analysis system and a carrier member defining a flat optical path volume with at least one lateral opening. The dispersive optical element is configured in a stationary manner. At least one of the inlet opening, the outlet opening and/or detector area, the at least one optical functional element and the dispersive optical element are integrated in at least one member. The at least one member is mounted on the carrier member at the at least one lateral opening, such that the optical path largely runs transversely to a thickness direction of the optical path volume.
    Type: Grant
    Filed: April 10, 2019
    Date of Patent: December 31, 2019
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Jens Knobbe, Heinrich Grueger
  • Patent number: 10514300
    Abstract: Spectrocolorimetric device includes a light source, a light-receiving unit, a calculation unit, a storage unit, an acquisition unit, and a conversion unit. The light-receiving unit spectroscopically disperses reflected light generated on a surface and measures a spectroscopic spectrum relating to the reflected light. The calculation unit calculates a first spectral reflectance from the spectroscopic spectrum. The storage unit stores relationship information indicating a relationship between a reflectance and a reflectance difference for each wavelength. The acquisition unit acquires reflectance difference for each wavelength between the first spectral reflectance acquired using the spectrocolorimetric device and a second spectral reflectance acquired using a destination-of-conversion spectrocolorimetric device on the basis of the first spectral reflectance and the relationship information.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: December 24, 2019
    Assignee: Konica Minolta, Inc.
    Inventor: Yoshiroh Nagai
  • Patent number: 10488249
    Abstract: Various embodiments of a light detection device and a method of using such device are disclosed. In one or more embodiments, the light detection device can include a housing including a top surface and a bottom surface, where the housing extends along a housing axis between the top surface and the bottom surface; and a support member connected to the housing and adapted to be selectively moved from a closed position to an open position. The support member is further adapted to maintain the light detection device in an upright position when the bottom surface and the support member are in contact with a working surface and the support member is in the open position.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: November 26, 2019
    Assignee: 3M Innovative Properties Company
    Inventors: Fusu Thao, Giuseppe M. Bommarito, Thomas E. Dewey, Jr., Kathleen M. Stenersen, Beth A. Fritcher, Stephen R. Alexander, Phillip A. Bolea, Michele A. Waldner
  • Patent number: 10480925
    Abstract: A system for inspecting a slab of material may include an optical fiber, a broadband light source configured to emit light having wavelengths of 780-1800 nanometers over the optical fiber, a beam-forming assembly configured to receive the light over the optical fiber and direct the light toward a slab of material, the beam-forming assembly may be configured to maintain the position of one or more elements within the beam-forming assembly despite changes in environmental temperature; a computer-controlled etalon filter configured to receive the light over the optical fiber, filter the light, and direct the light over the optical fiber; and a computer-controlled spectrometer configured to receive the light over the optical fiber after the light has been filtered by the etalon filter and after the light has been reflected from or transmitted through the slab of material and spectrally analyze the light.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: November 19, 2019
    Assignee: APPLEJACK 199 L.P.
    Inventor: Wojciech Jan Walecki
  • Patent number: 10480998
    Abstract: A spectrometer having slit and detector elements located on the optical axis of the spectrometer, resulting in substantially increased spectral and spatial fields of the spectrometer. The spectrometer being more compact than current designs, while providing superior spatial and spectral image quality and resolution.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: November 19, 2019
    Assignee: Wavefront Research, Inc.
    Inventor: Thomas A. Mitchell
  • Patent number: 10481468
    Abstract: A pump beam (12) is subjected to pulse front tilting, and then guided through an imaging optics (30) and then coupled into the nonlinear optical medium through an entry surface of the nonlinear optical medium. THz radiation is generated in the optical medium by nonlinear optical processes, in particular by optical rectification, via the pump beam. The pulse front tilt of the pump beam required to satisfy the velocity matching condition of vp,cs cos(?)=vTHz,f is induced as a sum of a plurality of pulse front tilts, where each pulse front tilt is induced separately as a partial pulse front tilt of the pump beam in subsequent steps. The last step of pulse front tilting of said pump beam (12) is performed by coupling the pump beam (12) into the nonlinear optical medium through a stair-step structure (40) formed in the entry surface of the nonlinear optical medium.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: November 19, 2019
    Assignee: Pécsi Tudományegyetem
    Inventors: János Hebling, Gábor Almási, László Pálfalvi, Levente Tokodi, József András Fülöp, Csaba Márió Lombosi
  • Patent number: 10451547
    Abstract: An illumination system includes a measurement stage on which a measurement target is located, a light-providing part having illumination sections providing multi-directional incident lights to the measurement target, a light-receiving part receiving single-directional reflection lights reflected by the measurement target according to the multi-directional incident lights, and a processing part that performs acquiring a first distribution of intensities the single-directional reflection lights with respect to the multi-directional incident lights, acquiring, from the first distribution, a second distribution of intensities of multi-directional reflections lights with respect to a single-directional incident light, and determining material of the measurement target based on parameters of the second distribution. A method of recognizing material using the illumination system and a computer readable non-transitory recording medium recording a program embodying the method are provided.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: October 22, 2019
    Assignee: DEEDIIM SENSORS INC.
    Inventor: Jang-Il Ser
  • Patent number: 10422508
    Abstract: A tunable spectral filter includes a first tunable dispersive element, a first optical element, a spatial filtering element located at the focal plane, a second optical element, and a second dispersive element. The first tunable dispersive element introduces spectral dispersion to an illumination beam with an adjustable dispersion. The first optical element focuses the illumination beam at a focal plane in which a distribution of a spectrum of the spectrally-dispersed illumination beam at the focal plane is controllable by adjusting the dispersion of the first tunable dispersive element. The spatial filtering element filters the spectrum of the illumination beam based on the distribution of the spectrum of the illumination beam at the focal plane. The second optical element collects the spectrally-dispersed illumination beam transmitted from the spatial filtering element. The second tunable dispersive element removes the dispersion introduced by the first tunable dispersive element from the illumination beam.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: September 24, 2019
    Assignee: KLA-Tencor Corporation
    Inventors: Andrew V. Hill, Amnon Manassen, Ohad Bachar
  • Patent number: 10405535
    Abstract: The various embodiments disclosed herein relate to identification of one or more specific objects among several other objects. Certain exemplary implementations relate to systems, methods, and devices for identification of one or more specific plant species among several different plants, especially real-time identification of weed plant species in a real-world environment such as a crop field. Other embodiments relate to identification systems, methods, or devices in combination with action components, such as a spraying system for spraying the weed plants identified in real time.
    Type: Grant
    Filed: May 5, 2015
    Date of Patent: September 10, 2019
    Assignees: UNIVERSITY OF SOUTHERN QUEENSLAND, HORTICULTURE INNOVATION AUSTRALIA LIMITED
    Inventor: Steven Rees
  • Patent number: 10408681
    Abstract: In order to provide a technique by which a highly-accurate conversion rule of measurement values between different spectrocolorimetric devices can be easily set, the spectrocolorimetric device includes a light source, a light-receiving unit, and a conversion unit. The light-receiving unit spectroscopically disperses reflected light generated on a surface of an object according to irradiation of the object with illumination light emitted from the light source and measures a spectroscopic spectrum of the reflected light. The conversion unit calculates a spectral reflectance that can be acquired by another spectrocolorimetric device from the spectroscopic spectrum by using a calibrated spectral sensitivity of the other spectrocolorimetric device different from the spectrocolorimetric device and the spectroscopic spectrum.
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: September 10, 2019
    Assignee: KONICA MINOLTA, INC.
    Inventor: Yoshiroh Nagai
  • Patent number: 10393585
    Abstract: A spectral detector includes a grating panel including a first grating pattern having a first period, a second grating pattern having a second period that is different from the first period, and a light exit surface through light exits the grating panel, and an optical measurement panel arranged to face the light exit surface of the grating panel, and configured to measure a change in intensity of first light passing through the first grating pattern according to a propagation distance of the first light, and to measure a change in intensity of second light passing through the second grating pattern according to a propagation distance of the second light.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: August 27, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sookyoung Roh, Sunghyun Nam
  • Patent number: 10352766
    Abstract: Focusing modules and methods are provided, which use a spatial light modulator (SLM) configured to yield a circumferentially sinusoidal pattern to derive focusing signals. For example, the SLM may comprise an optical chopper wheel made of a glass disc with a circumferentially sinusoidal pattern. The circumferentially sinusoidal pattern simplifies phase derivation from the focusing signal, providing a faster and more accurate estimation of defocusing. Signal detection may be carried out by a diode array that provides a more accurate signal faster, as well as a more differentiated analysis of the focusing signal than the one available by current technology.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: July 16, 2019
    Assignee: KLA-Tencor Corporation
    Inventors: Barry Loevsky, Ari Krauss, Avraham Bakal
  • Patent number: 10353224
    Abstract: Integrated active photonic device such as optical amplifiers, lasers, light emitters, photodetectors, optical modulators, optical switches, plasmonic devices, all-optical devices, and active photonic devices with high efficiency capable of very low power consumption, low optical loss, and small device size are of interest. An efficient optical waveguide structure for achieving high overlapping between the optical beam mode and the active electro-active region leads to reduced power consumption, low optical loss, and small device size. In an embodiment, low power consumption, low optical loss, and small device size are enabled by a semiconductor active photonic device structure, together with an active semiconductor material that is an electro-optic or electro-absorption or gain material, that are appropriately doped with carriers to substantially lower the power consumption and still maintain the high device performance.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: July 16, 2019
    Assignee: Electronic Photonic IC Inc. (EPIC Inc.)
    Inventors: Seng-Tiong Ho, Yingyan Huang
  • Patent number: 10345149
    Abstract: A design method of a spectrometer and a spectrometer are disclosed, including the following steps: 1) determining an incident angle of a second incident slit and a groove-shaped cycle of a concave grating; 2) estimating a blaze angle of the concave grating, determining a surface material and a groove-shaped structure of the concave grating; 3) acquiring wavelength-diffraction efficiency curves; 4) determining values of incident angles ?A1 and ?A3 and values of wavelengths ?2 and ?3, and setting ?4 to equal ?2; 5) acquiring a record structural parameter and a use structural parameter; 6) determining a manufacture parameter of the concave grating; 7) determining locations of the three incident slits and the three photodetectors relative to the concave grating. The spectrometer acquired by using this method has relatively high diffraction efficiency in most spectrum regions and effectively alleviates the problem of relatively low diffraction efficiency in a broad spectrum region.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: July 9, 2019
    Assignee: GRADUATE SCHOOL AT SHENZHEN, TSINGHUA UNIVERSITY
    Inventors: Kai Ni, Qian Zhou, Jinchao Pang, Jinchao Zhang, Rui Tian, Mingfei Xu, Hao Dong
  • Patent number: 10345148
    Abstract: A spectrometer having slit and detector elements located on the optical axis of the spectrometer, resulting in substantially increased spectral and spatial fields of the spectrometer. The spectrometer being more compact than current designs, while providing superior spatial and spectral image quality and resolution.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: July 9, 2019
    Assignee: Wavefront Research, Inc.
    Inventor: Thomas A. Mitchell